10 kW Solar Plant
10 kW rooftop solar power plant in Kerala: about 1,170 units a month worth ₹8,190, 18–20 panels on 1,000 sq ft. On-grid...
View detailsEmerald Solar · Kerala & South India
Commercial & Industrial Solar Power Up Your Profits
Commercial rooftop and carport solar from 10 kW to industrial scale in Kerala. A 50 kW plant pays back in about 4 years with 40% accelerated depreciation. See the 5-year ROI table.
~4 yearspayback on a 50 kW plant
40%accelerated depreciation in year one*
70,000units in year one from 50 kW
₹30.24 Lnet savings in 5 years on ₹22.5 L
Overview
Commercial & Industrial Solar: What You Get
Turn your roof into your most productive asset. Emerald designs and installs commercial rooftop and carport solar power plants from 10 kW to industrial scale for shops, offices, hotels, hospitals, schools, churches and factories across Kerala and South India.
Commercial tariffs are higher than residential ones, daytime business hours match solar generation, and businesses can claim accelerated depreciation (up to 40% in year one, as applicable under the Income Tax Act). Together this brings the typical payback of a commercial plant to 3–5 years, followed by 20+ years of near-free power.
Best for
- Shops, malls and offices
- Hotels, resorts and homestays
- Hospitals, schools and churches
- Factories and processing units
Return on Investment
Smart Energy. Smarter Investment.
An illustrative 50 kW commercial system: how energy savings, tax benefits and low maintenance recover the ₹22,50,000 investment in about four years.
Investment ₹22.5 L
Year 1Year 2Year 3Year 4Year 5
| Year | PV generation (kWh) | Unit rate (₹, +3%/yr) | Energy savings | Depreciation | Tax savings | O&M | Net savings | Cumulative |
|---|---|---|---|---|---|---|---|---|
| 1 | 70,000 | 7.00 | ₹4,90,000 | ₹9,00,000 | ₹2,70,000 | ₹25,000 | ₹7,35,000 | ₹7,35,000 |
| 2 | 69,370 | 7.21 | ₹5,00,158 | ₹5,40,000 | ₹1,62,000 | ₹27,500 | ₹6,34,658 | ₹13,69,658 |
| 3 | 68,746 | 7.43 | ₹5,10,526 | ₹3,24,000 | ₹97,200 | ₹30,250 | ₹5,77,476 | ₹19,47,134 |
| 4 | 68,127 | 7.65 | ₹5,21,109 | ₹1,94,400 | ₹58,320 | ₹33,275 | ₹5,46,154 | ₹24,93,288 |
| 5 | 67,514 | 7.88 | ₹5,31,912 | ₹1,16,640 | ₹34,992 | ₹36,603 | ₹5,30,301 | ₹30,23,589 |
* Indicative figures assuming 40% accelerated depreciation and a 30% tax rate, as applicable under the Income Tax Act; please consult your tax advisor. Actual returns depend on tariff, usage and site conditions.
Why Businesses Switch to Solar
- Slash electricity costs and boost margins
- Typical payback in 3–5 years
- Hedge against future tariff hikes
- Show customers a planet-friendly brand
- 25+ years of near-free power
Sectors We Serve
- Shops, malls and offices
- Hotels, resorts and homestays
- Hospitals, schools and churches
- Factories and processing units
Solar Savings Calculator
Which Solar Plant Size Do You Need?
Tick what you run at home, pick a plant size, and see generation, savings, payback and whether the plant covers your loads. Figures use Kerala averages (3.9 units/kW/day, ₹7/unit).
3. Choose a plant size
Your 5 kW solar plant
0 units/month
worth ₹0 a month at ₹7/unit
- Your selected load0 units
- PM Surya Ghar subsidy₹0
- Price after subsidyOn survey
- Payback periodOn survey
- Annual savings₹0
- Roof area needed0 sq ft
Indicative estimates only. Prices are Emerald’s catalogue figures after subsidy for residential on-grid plants; 1, 2 and 10 kW plants are priced after a free site survey. Actual generation varies with location, shading and season; bill savings depend on KSEB tariff slabs and net-metering rules.
Solar PV Modules
Tier-1 Panels Built for Kerala’s Heat and Humidity
| Cell technology | Monocrystalline, 144 half-cut cells |
|---|---|
| Module options | Mono PERC 540–555 Wp · TOPCon bifacial 575–590 Wp |
| Module efficiency | 21% – 22.8% |
| Dimensions | 2278 × 1134 × 30–35 mm (approx.) |
| Frame & glass | Anodised aluminium, 3.2 mm tempered AR glass |
| Junction box | IP68, 3 bypass diodes, MC4-compatible |
| Certifications | BIS / IEC 61215, IEC 61730, ALMM listed |
| Warranty | 12-year product · 25–30-year linear performance |
Brand and wattage are confirmed at the time of quotation based on availability and site design. See also our solar panel product page.
How We Work
From Survey to Sunshine in 5 Steps
Complete, ready-to-install systems. We handle the engineering, the KSEB paperwork and the subsidy, so going solar is simple.
- Tier-1 ALMM-listed solar modules
- Grid-tie / hybrid inverter with app monitoring
- Hot-dip galvanised mounting structure
- Earthing & lightning arrester
- ACDB / DCDB with surge protection
- UV-resistant DC & AC cabling
- KSEB feasibility & net-meter paperwork
- PM Surya Ghar subsidy application support
- Installation, commissioning & handover
- 1Free site surveyRoof, shading and load assessment by our engineers.
- 2Design & quoteRight-sized system, transparent pricing and a savings estimate.
- 3ApprovalsKSEB feasibility, net-metering and subsidy paperwork.
- 4InstallationNeat, safe installation by trained technicians.
- 5CommissioningNet meter live, handover and app-based monitoring.
Emerald Care
After-Sales Support That Keeps Output at Its Peak
- Performance monitoring: remote tracking of generation through the inverter app.
- Preventive maintenance: scheduled health checks of modules, wiring and earthing.
- Panel cleaning: professional cleaning on request or under AMC.
- Warranty support: we handle manufacturer claims on your behalf.
Solar Power Plant FAQs
Commercial Solar Plant FAQs
01.
What is the payback period for a commercial solar plant?
Typically 3–5 years. In our illustrative 50 kW example (₹22.5 lakh), energy savings plus tax savings from 40% accelerated depreciation at a 30% tax rate bring cumulative net savings to about ₹24.9 lakh by year 4.
03.
Can solar be installed on a sheet roof or as a carport?
Yes. We design mounting for RCC roofs, metal sheet roofs and elevated carport structures, after checking roof strength, orientation and shading.
05.
How much does a rooftop solar power plant cost in Kerala?
Indicative Emerald prices for residential on-grid plants after the ₹78,000 PM Surya Ghar subsidy are about ₹1,22,000 for 3 kW, ₹2,37,000 for 5 kW and ₹3,62,000 for 7 kW. Prices include panels, inverter, galvanised structure, earthing, lightning arrester, ACDB/DCDB, cabling, net-meter liaison and commissioning. Hybrid and off-grid systems cost more because of the battery. The final price is confirmed after a free site survey.
07.
What size solar power plant do I need for my home?
Check the units on your last few KSEB bills and divide the monthly average by about 117 (what 1 kW generates in a month in Kerala). A home using 350 units a month needs about 3 kW; 585 units needs 5 kW. Add about 2 kW if you plan to buy an electric car. Use the calculator on this page or book a free site survey for an exact size.
09.
Which is better: on-grid, off-grid or hybrid solar?
On-grid is the cheapest, pays back fastest and gets the subsidy, but it switches off during power cuts. Off-grid runs entirely on batteries and suits sites without a reliable grid. Hybrid combines net metering with a battery, so it saves money and keeps your home running through outages. Most Kerala homes with a stable supply choose on-grid; homes with frequent outages or an EV choose hybrid.
02.
Do commercial solar plants get a subsidy?
The PM Surya Ghar subsidy is for residential connections only. Businesses benefit instead from accelerated depreciation, as applicable under the Income Tax Act. Please consult your tax advisor.
04.
How much does a 50 kW solar plant generate?
About 70,000 units in the first year in our illustrative example, reducing slowly as panels age. At ₹7 a unit that is about ₹4.9 lakh of electricity in year one.
06.
How much subsidy is available for rooftop solar under PM Surya Ghar?
For residential grid-connected rooftop solar, the PM Surya Ghar: Muft Bijli Yojana gives ₹30,000 per kW for the first 2 kW and ₹18,000 for the third kW, capped at ₹78,000. So 1 kW gets ₹30,000, 2 kW gets ₹60,000 and 3 kW or more gets ₹78,000. The subsidy is credited to your bank account after commissioning and inspection, as per prevailing government norms.
08.
How many units does 1 kW of solar generate in Kerala?
About 3.9–4 units a day on average, or roughly 117–120 units a month and 1,400 units a year. Generation is highest from January to May and lower during the monsoon; the annual average already accounts for cloudy and rainy days.
10.
What is the payback period of rooftop solar?
At ₹7 a unit, residential plants pay back in about 4.1 years (3 kW), 4.8 years (5 kW) and 5.3 years (7 kW), equal to a simple annual return of 19–24%. Panels carry a 25–30-year performance warranty, so you enjoy 20 or more years of near-free power after payback. Commercial plants typically pay back in 3–5 years with accelerated depreciation.
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View detailsGet a free site visit & estimate for your solar plant
Call or WhatsApp +91 87147 04086. Our engineers check your roof, shading and load, then give you a transparent quote and savings estimate.